00:00My personal highlight was when this building was converted into a wind tunnel.
00:07The large drive unit that you can see behind me was lifted in using large construction materials.
00:13And now we are proud that we were able to help shape the future of the BMW Group with this building.
00:18Here in Munich, we built the world's quietest vehicle wind tunnel.
00:34For us acousticians, quiet is premium. Let me repeat it again.
00:39Premium
00:40Our focus is on product optimization for battery-powered electric vehicles.
00:46The customer wants really quiet vehicles.
00:54We have defined this characteristic.
00:57At 140 km per hour, it should be as quiet as the quietest ducts in the world.
01:03We cost-effectively transfer the situation from the road to the test bench.
01:08This means that we have reflections from the floor and otherwise from the walls and ceiling, no further reflections.
01:14We can do this here in this test bench from 30 Hz.
01:18We therefore cover the entire hearing path for the limit range.
01:24The nozzle is 6.25 meters wide, 4 meters high, and in total 25 square meters.
01:30This means that we can cleanly test the smallest products we have, as well as the largest products in our portfolio.
01:41They should feel as if they were on the road.
01:43Another really cool feature in our new wind tunnel is the acoustic camera.
01:57With over 216 microphones, we can precisely detect the location of the steel formation here, with an accuracy of less than 1 cm.
02:05The frequently changing analysis methods here in the plenum are supported by an extremely fast changeover time of less than 9 minutes for the floor modules.
02:15What is special about this is that the test vehicle can remain fully equipped here in the plenum, is briefly lifted by a vehicle lift and the floor modules are automatically changed underneath.
02:27A special feature here in the wind tunnel is the integration of an all-wheel drive acoustic roller test stand with a roller diameter of 2 meters, which is installed below in the plenum basement and can be integrated into the turntable here in the plenum if required.
02:45We can perform analyses of wind rolling noise regardless of wind and weather.
02:499. Construction and Testing of High Voltage Batteries for Future Electric Vehicles
03:02For this purpose, we have 15,000 square meters of production space available over several floors.
03:10What is special about this production facility is that we can manufacture the inverter here under clean room conditions.
03:16The inverter itself is, so to speak, the heart of the electric drive motor and, from a technical perspective, it converts the direct current that we receive from the high-voltage storage system into alternating current, thus keeping the electric motor running.
03:36By moving to FITs, we are even closer to our interface partners in development and purchasing.
03:42This allows us to make even better use of our synergies.
03:46Thank you.
03:48Thank you.
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